While it might be difficult to switch away from feature-packed products like Gmail and Google Maps, there are thankfully plenty of competitors to Google Keep. After all, you don't need millions of data points and industry-leading artificial intelligence to make a note-taking app.
https://www.androidpolice.com/2020/02/16/the-best-free-and-open-source-alternatives-to-google-keep-on-android/
https://www.androidpolice.com/2020/02/16/the-best-free-and-open-source-alternatives-to-google-keep-on-android/